#How sci hub extension works install
#How sci hub extension works update

Due to their simple nature, Update Modules are typically written in a scripting language like shell or Python. Update Modules are independent executables that can be written in any programming language.

For example, the Docker Update Module can be adjusted to include the container data itself if you do not want to rely on remote docker registries. An existing Update Module can be used as a starting point and adjusted to fit your exact needs. Update Modules give full control and customizability over how a software type is installed. An Update Module can also support more advanced functionality such as rolling back a failed update.

#How sci hub extension works install

The Update Module is responsible for carrying out the steps needed to install software of this type. When the Mender client downloads new software from the server, it will run the Update Module executable associated with the type of software downloaded. Persistent data can be stored in the data partition, which is left unchanged during the update process.ДЇor partial updates like application updates, the A/B partition is not necessary, and the Mender client can be installed as a. The only time the device has downtime is during the reboot into the updated partition, which typically takes a minute, depending on the device configuration. As Mender downloads and installs the image, other applications on the device continue to run as normal.

If the boot succeeds, Mender sets the updated partition to boot permanently when Mender starts as part of the boot process. If booting the updated partition fails, the partition that was running is booted instead, ensuring that the device does not get bricked. The Mender client daemon runs in user space in the currently booted rootfs partition.Дuring the update process, the Mender client writes the updated image to the rootfs partition that is not running and configures U-Boot to boot from the updated rootfs partition. due to power loss during the update process. This ensures that the device can recover even if the deployment is incomplete or corrupted during installation for any reason, e.g. For system level updates, we require a dual A/B rootfs partition layout on the device.